var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var logger = require('morgan');
var interception = require('./utils/interception');
var fileUpload = require('express-fileupload');
var cors = require('cors');
var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');
var msgRouter = require('./routes/msg');
const sensitiveWordRouter = require('./routes/sensitiveWord');
var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'pug');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

// 文件上传中间件配置
app.use(fileUpload({
  limits: { fileSize: 2 * 1024 * 1024 }, // 2MB
  abortOnLimit: true
}));

// 后端允许跨域
app.use(cors());
app.use('/v*', interception);
app.use('/v1/user', usersRouter);
app.use('/v1/msg', msgRouter);
app.use('/v1/sensitiveWord', sensitiveWordRouter);
// catch 404 and forward to error handler
app.use(function (req, res, next) {
  next(createError(404));
});

// error handler
app.use(function (err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;
